capitol hill on the hearing about deceptive advertising for weight loss products. some weight loss companies may be putting out false claims and people like dr. oz maybe part of the problem. dr. oz, world's best snake oil salesman. renee marsh is in washington. what is going on? >> reporter: don, you know, dr. oz, you saw the live feed there, it is still going on. he's still on the hot seat on capitol hill and the daytime home host whose show focuses on weight loss issues is frequently cited in false adds promising dramatic weight loss. she talked about the so-called os effect and she had some stuff questions for him. she said intentional or not, the senator believes that dr. oz has